Let's divide 30315128 by 668
The aim is to understand the frequency of 668 in 30315128.

Step 1:
When dividing 3 by 668, we get 0 with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Take the next digit (0) from the dividend and append it to 3, then repeat: 30 / 668

Step 2:
668 goes into 30 0 times with a remainder of 30.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 30 leaves us with 30.
Append the next digit (3) from the dividend to 30 and continue with: 303 / 668

On to step 3:
668 goes into 303 0 times with a remainder of 303.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 303 leaves us with 303.
Include the next digit (1) from the dividend after 303, then repeat: 3031 / 668

Advancing to step 4:
If we divide 3031 by 668, we get 4 and a remainder of 359.
The next digit of our result is 4. 
Result so far: 4.0
Subtract 2672 from 3031 to get 359.
Bring next digit (5) of the dividend behind the 359 and repeat the process: 3595 / 668

Let's proceed to step 5:
The number 668 fits into 3595 5 times, leaving a remainder of 255.
Write down 5 as next digit of the result. 
Result so far: 45.0
Subtracting 3340 from 3595 leaves us with 255.
Append the next digit (1) from the dividend to 255 and continue with: 2551 / 668

Advancing to step 6:
2551 divided by 668 is 3 with a remainder of 547.
The next digit of our result is 3. 
Result so far: 453.0
Deduct 2004 from 2551 and we're left with 547.
Include the next digit (2) from the dividend after 547, then repeat: 5472 / 668

On to step 7:
If we divide 5472 by 668, we get 8 and a remainder of 128.
The next digit of our result is 8. 
Result so far: 4538.0
Subtracting 5344 from 5472 leaves us with 128.
Grab the next digit (8) from the dividend, add it to 128, then carry on: 1288 / 668

Step 8:
If we divide 1288 by 668, we get 1 and a remainder of 620.
Use 1 as the next digit of our solution. 
Result so far: 45381.0
If we take 668 away from 1288, we end up with 620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6200, and continue the process.

Moving on to step 9:
If we divide 6200 by 668, we get 9 and a remainder of 188.
The number 9 becomes the next digit in our result. 
Result so far: 45381.9
Deduct 6012 from 6200 and we're left with 188.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1880, and continue the process.

On to step 10:
If we divide 1880 by 668, we get 2 and a remainder of 544.
Record the quotient 2 as the next digit in the result. 
Result so far: 45381.92
Deduct 1336 from 1880 and we're left with 544.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5440, and continue the process.

Moving on to step 11:
668 can be fit into 5440 8 times, resulting in a remainder of 96.
Use 8 as the next digit of our solution. 
Result so far: 45381.928
Deduct 5344 from 5440 and we're left with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

On to step 12:
When dividing 960 by 668, we get 1 with a remainder of 292.
The next digit of our result is 1. 
Result so far: 45381.9281
Subtract 668 from 960 to get 292.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2920, and continue the process.

Advancing to step 13:
When dividing 2920 by 668, we get 4 with a remainder of 248.
Use 4 as the next digit of our solution. 
Result so far: 45381.92814
The remainder is 248 after subtracting 2672 from 2920.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

Moving on to step 14:
If we divide 2480 by 668, we get 3 and a remainder of 476.
Put 3 as the next digit of the answer. 
Result so far: 45381.928143
Deduct 2004 from 2480 and we're left with 476.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4760, and continue the process.

Moving on to step 15:
When dividing 4760 by 668, we get 7 with a remainder of 84.
The number 7 becomes the next digit in our result. 
Result so far: 45381.9281437
If we subtract 4676 from 4760, we get 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Let's proceed to step 16:
If we divide 840 by 668, we get 1 and a remainder of 172.
The number 1 becomes the next digit in our result. 
Result so far: 45381.92814371
If we subtract 668 from 840, we get 172.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1720, and continue the process.

In conclusion, the division gives 45381.92814371 with a balance of 1.72e-07.